標準號：ISO 3794-1976
中文標準名稱：精油(含叔醇) 用乙酰化后酯值的測定評估游離醇含量
英文標準名稱：Essential oils (containing tertiary alcohols); Estimation of free alcohols content by determination of ester value after acetylation
標準類型：Y40
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Y40
國際標準分類號：71.100.60
適用范圍：The estimation is carried out by acetylation of the essential oil by acetyl chloride and acetic anhydride, in the presence of dimethylaniline. The acetylated oil is isolated and dried and the ester value is determined. The free alcohols content is calculated taking into account the ester values of the same but non-acetylated essential oil. This method is applicable to essential oils containing an appreciable proportion of tertiary alcohols, namely of linalol and terpineol. It is not applicable to essential oils containing appreciable proportions of phenols, anthranilates, lactones and aldehydes.